A novel method of elimination of light polarization cross sensitivity on tilted fiber Bragg grating bending sensor

IF 1 4区工程技术 Q4 INSTRUMENTS & INSTRUMENTATION

Metrology and Measurement Systems Pub Date : 2023-11-06 DOI:10.24425/mms.2022.143066

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引用次数: 1

Abstract

ThearticleshowsthepossibilityofusingTFBGgratingstomeasuretheradiusofcurvatureofﬁberbendinginconditionsofvariablepolarizationoftheintroducedlight.Mostofthemodern,stablelightsourcesgenerate lightwithahighdegreeofpolarization.Duetothespatialasymmetry,thedirectionofthelightpolarization planeaﬀectsthespectralparametersofindividualmodes.Forthisreason,inthemeasurementsystemsusing TFBGspresentedsofaritbecomesnecessarytodetermineandcontrolthestateoflightpolarizationdirectly infrontoftheperiodicstructure.Thearticlepresentsthedeterminedspectralparametersofthecladding modeswhichallowbendingmeasurementsregardlessofthedirectionofpolarizationoftheintroduced light.Thankstothis,themeasuringsystemcanbeconstructedwithoutprovidingcontroloftheintroduced lightpolarizationangle,whichmakesitsconstructionsimpler.WhenusingTFBGswithanangleof2 ◦ , the accuracy of determining the bending radius in the range from 15 mm to 30 mm when changing the angle of the plane of polarization in the full range is 0.318 mm in the case of changes in the transmission coeﬃcient. For changes in the wavelength of the selected cladding mode, the accuracy is 0.3203 mm, with the input light polarization being changed in the range from 0 ◦ (P type) to 90 ◦ (S type).

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来源期刊

Metrology and Measurement Systems INSTRUMENTS & INSTRUMENTATION-

CiteScore

2.00

自引率

10.00%

发文量

审稿时长

6 months

期刊介绍： Contributions are invited on all aspects of the research, development and applications of the measurement science and technology. The list of topics covered includes: theory and general principles of measurement; measurement of physical, chemical and biological quantities; medical measurements; sensors and transducers; measurement data acquisition; measurement signal transmission; processing and data analysis; measurement systems and embedded systems; design, manufacture and evaluation of instruments. The average publication cycle is 6 months.